189116237 has 2 divisors, whose sum is σ = 189116238. Its totient is φ = 189116236.

The previous prime is 189116233. The next prime is 189116251. The reversal of 189116237 is 732611981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188073796 + 1042441 = 13714^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 189116237 - 2² = 189116233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189116237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189116233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94558118 + 94558119.

It is an arithmetic number, because the mean of its divisors is an integer number (94558119).

Almost surely, 2^189116237 is an apocalyptic number.

It is an amenable number.

189116237 is a deficient number, since it is larger than the sum of its proper divisors (1).

189116237 is an equidigital number, since it uses as much as digits as its factorization.

189116237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 189116237 is about 13751.9539338961. The cubic root of 189116237 is about 573.9969780139.

The spelling of 189116237 in words is "one hundred eighty-nine million, one hundred sixteen thousand, two hundred thirty-seven".